Mixing device



y 1936. F. G. HAUSMAN 2,042,176

MIXING DEVICE Filed June 25, 1935 Wm BY K Patented May 26, 1936 UNITEDSTATES PATENT OFFICE MIXING DEVICE Frederick G. Hausman, Lakeville,Conn.

Application June 25, 1935, Serial No. 28,258

2 Claims.

The present invention relates to mixing devices such as cocktailshakers, malted milk mixers, etc., and has for an object to provide animproved device of this character equipped with power means foroperating the same.

I am aware that it is not new to provide a mixer with a power drivenagitator but heretofore the agitators have been driven by energysupplied from an external source and it is an object of the presentinvention to provide a self-contained power driven mixer adapted to usean energy storing element which is removable and replaceable withanother when its energy has been exhausted.

A more specific object of the invention is to provide a mixing devicewith a motor and battery installed therein, together with means fordetachably securing an agitator to the motor, the battery beingremovable and replaceable with a fresh one whenever necessary and theagitator being removable for cleaning purposes whenever desired or to bereplaced with an agitator of different form.

A further object of the invention is to provide a device of thecharacter described above in which the motor and battery are enclosed ina separate casing so that they are protected from contact with thecontents of the mixer receptacle.

Other objects and advantages of my invention will appear in thefollowing description of a preferred embodiment and thereafter thenovelty and scope of the invention will be pointed out in the claims.

The accompanying drawing is a view in vertical section through a mixerembodying my invention.

A receptacle is shown at H) which is in the form of a cup and it isprovided with a domed cap H which closes the top of the receptacle witha close fit. To this end a gasket |2 may be supplied either on the rimof the receptacle ID or within the rim of the cap H to prevent leakagewhen the agitator is operated.

The power plant for operating the agitator is contained in a tubularcasing H which projects through the cap N. This casing is divided intotwo chambers l5 and Hi by means of a diaphragm H. The lower chamber |5contains a motor I and the upper chambers IS a dry battery IS. Thediaphragm I1 is made of electrical insulation and bears a contact button20 which constitutes one terminal of the motor l8. The other terminal ofthe motor is connected to a rivet 2| in the diaphragm H. The battery isprovided with a contact piece 22 forming one pole thereof which isnormally pressed against the button 20 by a spring 23 within a cap 24screwed to the top of the casing H. The spring 23 contacts with theopposite pole of the battery thereby grounding the battery to the casingI4. A lead 25 which is 5 insulated from the casing M by insulationmate-- rial 26 runs from the rivet 2| to an opening in the side of thecasing where it terminates in a spring contact member 21. Mounted toslide on the side of the casing M is a switch button 28 10 provided witha contact member 29 which engages and grounds the member 21 when thbutton is slid upwardly, thereby completing the circult to the motor l8.

The bottom of the casing I4 is fitted with a 15 bearing 3|] throughwhich passes the armature shaft 3| of the motor I8. An agitator 32 isprovided at its upper end with a sleeve portion 34 which may be fittedon the end of the shaft 3| and be secured thereto by a set screw 35. The20 agitator is provided with blades 36 which may be of any suitableform.

In operation, the ingredients to be mixed are placed in the receptacleH) and after a suitable agitator 32 has been secured to the shaft 3| thecap I is fitted upon the top of the receptacle, the operator then slidesthe button 28 upwardly to close the circuit of the motor l8 and therebycause the agitator to rotate and mix the ingredients in the receptaclel0.

It will be observed that I have provided a very simple structure inwhich the motor that drives the agitator is protected from contact withthe ingredients of the receptacle. The device is self contained and themixing operation entails no physical effort. Since the motor is drivenby a battery it is not necessary to connect the device with an electricservice line and the mixer may, therefore, be used in any localityregardless of the presence or absence of electric power lines, Thebattery I9 is removable and replaceable with another at any time. Thedevice is completely sanitary because the motor is completely housedwithin the casing l4 and the agitator may be removed for cleaningpurposes whenever desired.

While I have described a preferred embodiment I wish it to be understoodthat this is to be taken as illustrative and not limitative of myinvention and that I reserve the right to make various changes in form,construction and arrangement of parts without departing from the spiritand scope of the invention as set forth in the following claims.

I claim:

1. A device of the character described comprising a receptacle providedwith a removable domed cover, a power plant, a casing formed in thecover and adapted toreceive said power plant and to isolate the powerplant from the contents of the receptacle. an agitator for agitating thecontents of the receptacle, and a coupling for cpex'atively connectingthe agitator to the power plant, said power plant comprising a motorelement. a removable energy supplying element, and manually controllablemeans for operatively connecting said motor and said element. the motorbeing disposed within the bounds oi the cover dome.

2. A device of the character described comprising a receptacle providedwith a removable domeshaped cover, a tubular casing projecting throughthe cover, said casing having an outwardly pro- Jecting portion adaptedto serve as a handle for the cover and an inwardly projecting portionwithin the bounds of the cover time, a motor mounted in the latterportion of the casing, an electric battery removably mounted in thehandle portion of the casing, manual control means for operativelyconnecting the motor and battery, and an agitator arranged to be drivenby the motor and depending within the receptacle when the cover isapplied to the receptacle.

FREDERICK G. HAUSMAN.

